HCRT and cerebral infarction: The mechanism whereby body temperature did not rise in the cerebral infarction groupis not clear, but it has been reported that body temperature does not rise even under stress dueto damage of orexin-positive cells in the hypothalamus.16 Damage of orexin-positive cells in the hypothalamus due to inflammation andmicroemboli in the blood vessels of the vertebrobasilar arterial system may be involved.